<template>
  <div class="login">
    <div class="leftPick">
      <img :src="defaultBg" alt="" />
    </div>
    <div class="rightForm">
      <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
        <h3 class="title">{{ title }}</h3>
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
            <template #prefix><img class="userName" src="../assets/images/userName.png" /></template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            :type="iconStatus ? 'text' : 'password'"
            size="large"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter="handleLogin"
          >
            <template #prefix><img class="userName" src="../assets/images/password.png" /></template>
            <template #suffix> <img class="userName" src="../assets/images/showPass.png" @click="handleIconClick" /></template>
          </el-input>
        </el-form-item>
        <el-form-item prop="code" v-if="captchaEnabled">
          <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" @keyup.enter="handleLogin">
            <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img" />
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" class="mt-16 mb-60">记住密码</el-checkbox>
        <el-form-item>
          <el-button :loading="loading" size="large" type="primary" @click.prevent="handleLogin">
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
          <div v-if="register">
            <router-link class="link-type" style="font-size: 20px; font-weight: 400" :to="'/register'">立即注册</router-link>
          </div>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from '@/api/login'
import { getConfigKey } from '@/api/system/config'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const router = useRouter()
const { proxy } = getCurrentInstance()

const iconStatus = ref(false)
const loginForm = ref({
  username: '',
  password: '',
  rememberMe: false,
  code: '',
  uuid: ''
})

const loginRules = {
  username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
  password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
  code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
}

const title = ref('')
const defaultBg = ref('/fileUrl/light/template/loginBack.png')
const codeUrl = ref('')
const loading = ref(false)
// 验证码开关
const captchaEnabled = ref(false)
// 注册开关
const register = ref(true)
const redirect = ref(undefined)

function handleIconClick() {
  iconStatus.value = !iconStatus.value
}

function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set('username', loginForm.value.username, { expires: 30 })
        Cookies.set('password', encrypt(loginForm.value.password), { expires: 30 })
        Cookies.set('rememberMe', loginForm.value.rememberMe, { expires: 30 })
      } else {
        // 否则移除
        Cookies.remove('username')
        Cookies.remove('password')
        Cookies.remove('rememberMe')
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          router.push({ path: redirect.value || '/' })
        })
        .catch(() => {
          loading.value = false
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode()
          }
        })
    }
  })
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled
    if (captchaEnabled.value) {
      codeUrl.value = 'data:image/gif;base64,' + res.img
      loginForm.value.uuid = res.uuid
    }
  })
}

function getDefaultBg() {
  getConfigKey('defaultBg').then((res) => {
    defaultBg.value = res.msg
  })
}

function getDefaultTitle() {
  getConfigKey('defaultTitle').then((res) => {
    title.value = res.msg
    document.title = res.msg
  })
}

function getCookie() {
  const username = Cookies.get('username')
  const password = Cookies.get('password')
  const rememberMe = Cookies.get('rememberMe')
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  }
}
getDefaultBg()
getDefaultTitle()
getCode()
getCookie()
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}
.leftPick {
  width: 60%;
  height: 100%;
  img {
    width: 100%;
    height: 100%;
    display: block;
  }
}

.rightForm {
  width: 40%;
  height: 100%;
  padding: 3rem 1rem;
  .login-form {
    .title {
      text-align: center;
      font-size: 0.4rem;
      font-family: PingFangSC-Heavy, PingFang SC;
      font-weight: 800;
      color: #202224;
      line-height: 0.56rem;
      letter-spacing: 0.1rem;
      margin-bottom: 0.51rem;
    }
    .userName {
      margin-top: 0.17rem;
    }
    :deep(.el-input__prefix-inner),
    :deep(.el-input__suffix) {
      display: block;
    }
    :deep(.el-input__wrapper) {
      width: 4.1rem;
      height: 0.6356rem;
      border-radius: 0;
      border: 0;
      font-family: 'PingFangSC-Regular', 'PingFang SC';
      border-bottom: solid 0.01rem rgba(216, 216, 216, 1);
      font-size: 0.18rem;
      box-shadow: none;
      margin: 0 auto;
      .el-input__inner {
        margin-left: 10px;
      }
    }
    :deep(.el-checkbox__label) {
      color: rgba(187, 187, 188, 1);
      font-size: 0.16rem;
      line-height: 0.22rem;
      font-weight: 400;
      font-family: 'PingFangSC-Regular', 'PingFang SC';
      letter-spacing: 0.04rem;
    }
    :deep(.el-form-item) {
      margin-bottom: 0rem;
    }
    :deep(.el-button) {
      margin: 0 auto;
      width: 4.16rem;
      height: 0.6rem;
      background: #333fff;
      border-radius: 0.05rem;
      font-size: 0.18rem;
      font-family: 'PingFang-SC-Medium', 'PingFang-SC';
      font-weight: 500;
      color: #ffffff;
      line-height: 0.25rem;
    }
  }
}
</style>
